Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number VS-306 found under Spring by Mckean Machinery Sales Inc. The National Stock Number assigned to this part is 3610011124645, and the Federal Supply Class is 3610 Printing Duplicating And Bookbinding Equipment. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like VS-306.